* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
ul,
li {
  list-style: none;
}
a {
  text-decoration: none;
}
html {
  font-size: 50px;
}
@media screen and (min-width: 320px) {
  html {
    font-size: 21.33333333px;
  }
}
@media screen and (min-width: 360px) {
  html {
    font-size: 24px;
  }
}
@media screen and (min-width: 375px) {
  html {
    font-size: 25px;
  }
}
@media screen and (min-width: 384px) {
  html {
    font-size: 25.6px;
  }
}
@media screen and (min-width: 400px) {
  html {
    font-size: 26.66666667px;
  }
}
@media screen and (min-width: 414px) {
  html {
    font-size: 27.6px;
  }
}
@media screen and (min-width: 424px) {
  html {
    font-size: 28.26666667px;
  }
}
@media screen and (min-width: 480px) {
  html {
    font-size: 32px;
  }
}
@media screen and (min-width: 540px) {
  html {
    font-size: 35px;
  }
}
@media screen and (min-width: 720px) {
  html {
    font-size: 38px;
  }
}
@media screen and (min-width: 750px) {
  html {
    font-size: 40px;
  }
}
body {
  min-width: 320px;
  width: 15rem;
  margin: 0 auto;
  line-height: 1.5;
  font-family: Arial, Helvetica;
  background: #f2f2f2;
}
.search-content {
  position: fixed;
  width: 15rem;
  height: 1.76rem;
  display: flex;
}
.search-content .search {
  margin: 0 0.3rem;
  flex: 1;
  height: 100%;
}
.search-content .search .logo {
  position: absolute;
  top: 28%;
  left: 7%;
  width: 1rem;
  height: 0.8rem;
}
.search-content .search .logio {
  position: absolute;
  top: 25%;
  left: 17%;
  width: 1rem;
  height: 0.9rem;
}
.search-content .search input {
  outline: none;
  width: 100%;
  border: 0;
  height: 1.32rem;
  border-radius: 0.66rem;
  margin-top: 0.24rem;
  font-size: 0.6rem;
  padding-left: 3.8rem;
  color: #666;
}
.search-content .login {
  width: 1.5rem;
  height: 1.4rem;
  margin: 0.2rem;
  font-size: 0.6rem;
  text-align: center;
  color: #fff;
  line-height: 1.4rem;
}
/* banner */
.banner {
  width: 15rem;
  height: 7.36rem;
}
.banner img {
  width: 100%;
  height: 100%;
}
/* nav */
.nav {
  width: 15rem;
  height: 6.16rem;
}
.nav li {
  display: flex;
  flex-wrap: wrap;
  width: 15rem;
  height: 5.68rem;
  padding: 0.4rem 0.5rem;
}
.nav li a {
  flex: 25%;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 0.2rem;
}
.nav li a img {
  display: block;
  width: 1.8rem;
  height: 1.8rem;
  margin: 0.2rem auto 0;
}
.nav li a span {
  font-size: 0.56rem;
  color: #666;
  margin-top: 0.2rem;
}
.foot {
  width: 100%;
  margin-top: 1rem;
  border-bottom: 1px solid #DFDFDF;
}